10 ml in 30 min!!!for a beginner!!a good tt time is in the low twenties isnt it ?you must b going some ,,i commute 7 miles and it gen takes me about 30 min,,that obv includes me stopping at lights ,,,i think the only way i could do ten in 30 min is wind assisted (or an engine lol),,if ur av is 20 mph then il eat my hat ,,no way thats achievable in urban traffic (red lights and stuff)